---
title: "CVE-2026-93228: Linux Kernel - Denial of Service"
description: "Linux kernel contains a vulnerability in svcrdma where Write/Reply chunks with segcount 0 are improperly accepted, caused by insufficient validation in xdr_check_write_chunk, letting remote peers send malformed chunks, exploit requires network access to send crafted RDMA packets."
url: https://panop.io/threat-heartbeat/CVE-2026-93228/
---

# CVE-2026-93228 Linux Kernel - Denial of Service

Linux kernel contains a vulnerability in svcrdma where Write/Reply chunks with segcount 0 are improperly accepted, caused by insufficient validation in xdr\_check\_write\_chunk, letting remote peers send malformed chunks, exploit requires network access to send crafted RDMA packets.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.47% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-93228)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Published

24 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for rejecting Write/Reply chunks with segcount 0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-93228](https://nvd.nist.gov/vuln/detail/CVE-2026-93228)
- [https://git.kernel.org/stable/c/45dbdb2637b7fc5f1355b588780d2a7fb0516805](https://git.kernel.org/stable/c/45dbdb2637b7fc5f1355b588780d2a7fb0516805)
- [https://git.kernel.org/stable/c/9808eb7656666acc7291bae9ab6b987bd16e47e0](https://git.kernel.org/stable/c/9808eb7656666acc7291bae9ab6b987bd16e47e0)
- [https://git.kernel.org/stable/c/a798714b58041e88716db3bf8fb03ae13eecd54a](https://git.kernel.org/stable/c/a798714b58041e88716db3bf8fb03ae13eecd54a)
- [https://git.kernel.org/stable/c/fe533ae1bed2ef2b3d54ee7ab410da1874ed3d4f](https://git.kernel.org/stable/c/fe533ae1bed2ef2b3d54ee7ab410da1874ed3d4f)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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